3 years ago

PLEASE HELP I CANT CONTINUE WITH MY WORK UNLESS THESE ARE COMPLETE AND CORRECT

Mathematics

1 answer:

Snezhnost [94]3 years ago

6 0

Answer:

1) x=3, y=-3

Step-by-step explanation:

10x + 7y = 9 —— (1)

-4x -7y = 9 —— (2)

(1) + (2)

6x = 18

x = 18/6

x = 3

put x=3 in (1)

10(3) + 7y = 9

30 + 7y = 9

7y = 9 - 30

7y = -21

y = -21/7

y = -3

please give me brainlist if it is helpful for you

You might be interested in

Which of the following is a perfect square trinomial ? PLEASE HELP!!!!!!!!!!!!!!!!!

zepelin [54]

Answer:

The answer is C. 16x² - 56xy + 49y²

Step-by-step explanation:

A perfect square trinomial is the result of a squared binomial, the perfect square trinomial would be a² + 2ab + b², as that is what you get when you expand the brackets.

6 0

3 years ago

Expand and simplify bracket please quickly

natulia [17]

Answer:

4y²-1/4 is the required answer

Step-by-step explanation:

$(2y - \frac{1 }{2} )(2y + \frac{1}{2} ) \\ using \: formula \: {x}^{2} - y {}^{2} = (x - y)(x + y) \\ 4y {}^{2} - \frac{1}{4}$

4 0

1 year ago

Complete the point-slope equation of the line through

jek_recluse [69]

Answer:

y +1 = 3/4(x -1)

Step-by-step explanation:

8 0

2 years ago

What is 2 1/4 + 3 2/4

Daniel [21]

Answer:

5 7/12

Step-by-step explanation:

have a great day :)

7 0

3 years ago

What does rename 780,000 = 78 mean

marysya [2.9K]

78 is the significant figure because in maths 0's are not considered significant. Read more into significant figures to help you out.

4 0

3 years ago